Precision CNC machined from lightweight, solid aluminum with type III black hard anodized finish. MIL-STD 1913 Picatinny rail pattern allows mounting a variety of lasers, sights and scopes or other accessories. Machined to fit keymod mounting systems. Includes needed hardware for install. Specifications:- converts keymod to Picatinny- length: 2.2 inch - 5 Slot- material: aluminum- finish: black.